Product details of the hollow fiber membrane spinneret
Product Description
The independent design of hollow fiber membrane spinneret provides guarantees for our own brand promotion at the source. The wide used foreground of hollow fiber membrane spinneret is proved over a long period of time. Shanghai Trustech Technology Development Co., Ltd. opens the market with high quality and low price.
Core structure and working mechanism
Core features of the FCT 5th generation MBR spinneret plate
Its features center on three core principles: maintenance convenience, precision design, and production scalability.
Maintenance convenience: split architecture and quick disassembly
This is the most intuitive breakthrough of FCT technology, directly tackling the time and labor intensive maintenance of traditional spinnerets.
Precision design: monolithic spinneret core and ultra high accuracy
While enhancing maintainability, it pursues extreme precision in key components.
Production scalability: multi-hole expansion and outstanding reliability
The design strongly supports large scale industrial production.
Trustech Spinneret Key Design Elements Trustech
These parameters are fundamental to spinneret design and directly determine the membrane's final performance:
|
Parameter |
Description |
Influence on membrane performance |
| Flow channel (R) | The runner for transporting, buffering, and distributing the dope and bore fluids. | Different structures should be optimized according to material properties, viscosity, spinneret orifice size, and hole quantities to achieve optimal spinning performance. |
| Annular gap width (d) | The gap (thickness) of the dope flow channel. | It primarily determines the hollow fiber wall thickness. Narrower gaps yield thinner walls and lower mass-transfer resistance, but may reduce mechanical strength. |
| Bore tube outer diameter (d₁) | The outer diameter of the central tube forming the inner wall of the annular gap. | Together with the outer sleeve inner diameter, it defines the annular gap width. |
| Outer sleeve inner diameter (d₂) | The inner diameter of the spinneret outer sleeve forming the outer wall of the annular gap. | Together with the bore tube outer diameter, it defines the annular gap width and the fiber outer diameter. |
| Central tube inner diameter (d₃) | The diameter of the bore fluid channel. | It primarily determines the fiber inner diameter. The inner diameter affects membrane module packing density and the pressure drop of fluid inside the fiber. |
| Length-to-gap ratio (L/d) | The ratio of the flow channel length (L) to the annular gap width (d). | It affects spinning stability. Designing an appropriate L/d according to material properties and process conditions helps stabilize flow and eliminate entry effects, resulting in more uniform extruded fibers membrane. |
| Concentricity | The coaxial alignment among the dope layer inner diameter at the spinneret outlet and the bore tube inner and outer diameters. | It affects wall-thickness uniformity and bubble point pressure. |
| Extrusion face geometry | The foremost geometry of the spinneret, such as flat or micro-tapered. | It influences draw-down and deformation after extrusion, especially important for the air-gap segment in dry-wet spinning. |
The Advantages of Trustech FCT Generation 5th Spinneret Trustech
The spinneret design covers a wide dope viscosity range, offers strong versatility, high spinning stability, and effectively reduces issues such as filament breaks.
Product Parameters
| Brand | Trustech | Application | Braided tube |
| Material | SUS304, SUS630, SUS316L | Holes/Pack | 1-8 |
| Dope inlet Thread | G1/8, BSP1/8,NPT1/8 | Minimum membrane OD | 1.0mm-1.2mm |
| Bore liquid inlet thread | G1/8, BSP1/8,NPT1/8 | Customize thread | Yes |
| Precision | ±0.002mm | Concentricity | 0.003mm |
| Design | FCT design | Connections | Standard |
| Viscosity application | 1000-300000cp | Roughness | Ra 0.8 |
| Solvent | DMAC, DMF, NMP | Temperature | 60℃ |
Common Specifications
| No. | General Specification | Application | Design Type | Type |
| 1 | 2.3/1.5/1.0 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 2 | 2.3/1.5/1.2 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 3 | 2.7/1.5/1.2 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 4 | 2.2/1.7/1.4 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 5 | 2.7/2.2/1.9 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 6 | 2.8/2.0/1.5 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 7 | 2.8/2.2/1.9 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 8 | 2.8/2.3/2.0 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 9 | 2.9/1.4/1.1 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 10 | 2.9/1.8/1.5 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 11 | 2.9/1.9/1.6 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 12 | 3.0/2.3/1.9 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 13 | 3.0/2.3/2.0 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 14 | 3.1/2.8/2.5 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 15 | 3.2/2.2/1.8 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 16 | 3.4/1.7/1.4 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 17 | 3.4/2.2/1.8 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 18 | 3.7/1.9/1.6 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 19 | 3.8/2.2/1.9 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 20 | 3.8/2.3/2.0 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 21 | 3.8/2.3/2.0 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 22 | 4.0/2.5/2.1 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
| 24 | 4.0/3.0/2.5 | Braided tube | FCT design | Single-aperture/ Multi-aperture |
Suitable Materials
PVDF (Polyvinylidene Fluoride), CA (cellulose acetate), PVC (Polyvinyl chloride), PES (Polyethersulfone), PSF/PSU (Polysulfone), PA (Nylon, Polyamide), PAN (polyacrylonitrile)
FCT Design
We can offer FCT designs that allow the spinneret core to be removed, replacing conventional designs where each spinneret hole cannot be independently replaced or disassembled. If one hole has a quality issue, the entire spinneret traditionally needs repair or scrapping. Our FCT spinnerets are independently designed so each hole can be individually replaced if needed. The FCT 6th-generation spinneret enables independent on/off control of the dope feed for each spinneret core, and the 8th-generation FCT spinneret cores can be changed online within a few minute down to 50 seconds when problems occur,to ensure continuous production without downtime.
Customer Membrane Examples
FAQ
Company Advantage
• With good location advantages, the open and easy traffic serves as the foundation for Trustech's development.
• Formally established in our company has been committed to the research and development and innovation of the main products. After years' exploration and development, we have successfully developed a feature road that is in line with China's national conditions and suitable for our own situation.
• Trustech's Spinning Machine,Hollow Fiber Spinneret,Gear Metering Pump are of good quality and competitive price. And the sales network covers from provinces, municipalities and autonomous regions to many developed countries and regions.
• Trustech pays great attention to customer demand and strives to provide professional and quality services for customers. We are highly recognized by customers and are well received in the industry.
• Our company works closely with a number of major raw material suppliers and advanced units at home and abroad to establish a benign commercial supply chain, which provides a reassurance for our company in terms of raw materials and technology.
We hope to cooperate with you for a win-win situation and jointly create a better future.
About Trustech